MRc5 Option 2 - Direct miles or Nautical Miles?

Megan, the key term in the credit language is "travel distance," so I think you're on the right track with nautical miles.

Good Morning Megan, Great website for checking distances! Thanks for posting this. I’d like to share a clarification regarding nautical miles, as I understand them. Distancefromto.net gives the direct distance over the earth’s surface (great circle or Riemannian circle), including the curvature of the earth, between two locations. Like you said, this is the shorter of the two arcs on the great circle containing the two points. A distance can be described using different units, and I like that the website displays the various units. A nautical mile is approximately 6,076 feet , or roughly 15% longer than a statute mile which is 5,280 feet. Units of nautical miles are often used in the aviation and shipping businesses, so a shipping company might refer to sending something from, say, Seattle to Guam as 4,930 nautical miles. This is approximately 5,673 statute miles. Based upon the USGBC’s credit language of “500 miles (800 kilometers)”, statute miles, which we commonly refer to as simply miles, are used for LEED distance calculations. I hope this helps!